#shipon2004

Main Activity.java class

package com.shipon.pdflodanddownlod;

import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity;

import android.app.ProgressDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.webkit.URLUtil; import android.widget.Button; import android.widget.LinearLayout; import android.widget.Toast;

import com.downloader.Error; import com.downloader.OnCancelListener; import com.downloader.OnDownloadListener; import com.downloader.OnPauseListener; import com.downloader.OnProgressListener; import com.downloader.OnStartOrResumeListener; import com.downloader.PRDownloader; import com.downloader.Progress;

import java.io.File;

public class MainActivity extends AppCompatActivity {

Button button1, button2; int downloadId;

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); PRDownloader.initialize(getApplicationContext());

button1 = findViewById(R.id.button1); button2 = findViewById(R.id.button2);

button1.setOnClickListener(v -> {

String pdfurl = "https://www.w3.org/WAI/ER/tests/xhtml/testfiles/resources/pdf/dummy.pdf";

File fil = new File(getCacheDir(), URLUtil.guessFileName(pdfurl, null, null));

if (fil.exists()){

Intent intent = new Intent(MainActivity.this, MainActivity2.class); intent.putExtra("isOnline", false); intent.putExtra("pdfurl", pdfurl); startActivity(intent);

}else { showDialog(pdfurl); }

});

button2.setOnClickListener(v -> {

String pdfurl = "https://www.clickdimensions.com/links/TestPDFfile.pdf"; File fil = new File(getCacheDir(), URLUtil.guessFileName(pdfurl, null, null));

if (fil.exists()){

Intent intent = new Intent(MainActivity.this, MainActivity2.class); intent.putExtra("isOnline", false); intent.putExtra("pdfurl", pdfurl); startActivity(intent);

}else { showDialog(pdfurl); }

});

}//============== onCreate end method ================= public void showDialog(String pdfUrl) {

AlertDialog.Builder alert = new AlertDialog.Builder(MainActivity.this); LayoutInflater inflater = getLayoutInflater();

View myView = inflater.inflate(R.layout.choose_item, null); Button btOnline = myView.findViewById(R.id.btOnline); Button btDownlod = myView.findViewById(R.id.btDownlod); Button btCancel = myView.findViewById(R.id.btCancel); alert.setView(myView);

AlertDialog alertDialog = alert.create();

alertDialog.setCancelable(false);

btOnline.setOnClickListener(v -> {

Intent intent = new Intent(MainActivity.this, MainActivity2.class); intent.putExtra("isOnline", true); intent.putExtra("pdfurl", pdfUrl); startActivity(intent);

alertDialog.dismiss();

});

btDownlod.setOnClickListener(v -> {

downlodPDF(pdfUrl); alertDialog.dismiss(); });

btCancel.setOnClickListener(v -> {

alertDialog.dismiss();

});

alertDialog.show(); }// how Dialog end method -------- private void downlodPDF(String pdfurl) {

ProgressDialog progressDialog=new ProgressDialog(MainActivity.this); progressDialog.setIcon(R.drawable.down_24); progressDialog.setMessage("Downloading PDF File, Please Wait a moment..."); progressDialog.setCancelable(false); progressDialog.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialog, int which) { Toast.makeText(getApplicationContext(), "Downlod Start", Toast.LENGTH_SHORT).show(); PRDownloader.cancel(downloadId); progressDialog.dismiss(); } });

progressDialog.show(); downloadId = PRDownloader.download(pdfurl, String.valueOf(getCacheDir()), URLUtil.guessFileName(pdfurl, null, null)) .build() .setOnStartOrResumeListener(new OnStartOrResumeListener() { @Override public void onStartOrResume() {

} }) .setOnPauseListener(new OnPauseListener() { @Override public void onPause() {

} }) .setOnCancelListener(new OnCancelListener() { @Override public void onCancel() {

} }) .setOnProgressListener(new OnProgressListener() { @Override public void onProgress(Progress progress) { int progressPercentage = (int) (progress.currentBytes*100/progress.totalBytes); progressDialog.setMessage("Downlod : "+progressPercentage+" %");

} }) .start(new OnDownloadListener() { @Override public void onDownloadComplete() {

Toast.makeText(getApplicationContext(), "Downlod Completed", Toast.LENGTH_SHORT).show(); Intent intent = new Intent(MainActivity.this, MainActivity2.class); intent.putExtra("isOnline", false); intent.putExtra("pdfurl", pdfurl); startActivity(intent);

progressDialog.dismiss(); }

@Override public void onError(Error error) {

Toast.makeText(getApplicationContext(), "Downlod Failed", Toast.LENGTH_SHORT).show(); progressDialog.dismiss(); } });

}

}//============== public class ==========================

MainActivity 2 xmal class start

<?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white" tools:context=".MainActivity2">

<com.airbnb.lottie.LottieAnimationView android:id="@+id/lotti" android:layout_width="match_parent" android:layout_height="wrap_content" android:visibility="invisible" app:lottie_autoPlay="true" app:lottie_loop="true" app:lottie_rawRes="@raw/pdf" />

<com.github.barteksc.pdfviewer.PDFView android:id="@+id/pdfView" android:layout_width="match_parent" android:layout_height="match_parent" android:visibility="invisible" />

</RelativeLayout>

MainActivity2.java class start

package com.shipon.pdflodanddownlod;

import androidx.appcompat.app.AppCompatActivity;

import android.os.AsyncTask; import android.os.Bundle; import android.view.View; import android.webkit.URLUtil; import android.widget.Toast;

import com.airbnb.lottie.LottieAnimationView; import com.github.barteksc.pdfviewer.PDFView; import com.github.barteksc.pdfviewer.util.FitPolicy;

import java.io.BufferedInputStream; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.net.HttpURLConnection; import java.net.MalformedURLException; import java.net.URL;

public class MainActivity2 extends AppCompatActivity {

// public static String AssateName=""; LottieAnimationView lotti; PDFView pdfView;

@Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main2);

pdfView = findViewById(R.id.pdfView); lotti = findViewById(R.id.lotti); lotti.setVisibility(View.VISIBLE);

boolean isOnline = getIntent().getBooleanExtra("isOnline", true); String pdfurl = getIntent().getStringExtra("pdfurl"); if (isOnline == true) { new RetrivePDFfromUrl().execute(pdfurl);

} else {

File fil = new File(getCacheDir(), URLUtil.guessFileName(pdfurl, null, null));

lodPDFOffline(fil);

}

}//============= onCreate ned method =================== private class RetrivePDFfromUrl extends AsyncTask<String, Void, InputStream> { @Override protected InputStream doInBackground(String... strings) {

try { URL url = new URL(strings[0]); HttpURLConnection httpURLConnection = (HttpURLConnection) url.openConnection();

if (httpURLConnection.getResponseCode() == HttpURLConnection.HTTP_OK) { return new BufferedInputStream(httpURLConnection.getInputStream()); }

} catch (MalformedURLException e) { throw new RuntimeException(e);

} catch (IOException e) { throw new RuntimeException(e); }

return null; }

@Override protected void onPostExecute(InputStream inputStream) { super.onPostExecute(inputStream);

if (inputStream != null) { lodPDFOnline(inputStream);

} else { Toast.makeText(MainActivity2.this, "PDF lod failed", Toast.LENGTH_SHORT).show(); }

} }

private void lodPDFOnline(InputStream inputStream) {

pdfView.fromStream(inputStream) .enableSwipe(true) .swipeHorizontal(true) .enableDoubletap(true) .defaultPage(0) .enableAnnotationRendering(false) .password(null) .scrollHandle(null) .enableAntialiasing(true) .spacing(0) .pageFitPolicy(FitPolicy.WIDTH) .pageSnap(true) // snap pages to screen boundaries .pageFling(true) // make a fling change only a single page like ViewPager .onLoad(nbPages -> { lotti.setVisibility(View.GONE); pdfView.setVisibility(View.VISIBLE);

}) .load();

}

private void lodPDFOffline(File file) {

pdfView.fromFile(file) .enableSwipe(true) .swipeHorizontal(true) .enableDoubletap(true) .defaultPage(0) .enableAnnotationRendering(false) .password(null) .scrollHandle(null) .enableAntialiasing(true) .spacing(0) .pageFitPolicy(FitPolicy.WIDTH) .pageSnap(true) // snap pages to screen boundaries .pageFling(true) // make a fling change only a single page like ViewPager .onLoad(nbPages -> { lotti.setVisibility(View.GONE); pdfView.setVisibility(View.VISIBLE);

}) .load();

}

}//= ==================== public calss end method =======================

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